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Zhejiang Jiayue Machinery Manufacturing Co.,Ltd
Add:No.7 Changxin Road, Yancang Subdisctrict, Dinghai, Zhoushan, Zhejiang, China
Mobile: +86-15958098091(Wechat, WhatsApp)

Contact Person: Jade Le

Single Screw and Barrel for Injection Moulding Machine

Single Screw and barrel for Injection Moulding Machine Product Parameter Product Features Single Screw and barrel for Injection Moulding Machine Screw Production Process Barrel Production Process Application Area Applications in Plastic Products Applications in Plastic Machinery Single Screw and...

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Product Details

China Single Screw And Barrel For Injection Moulding Machine


Product Parameter

Single Screw and barrel for Injection   Moulding Machine

Nitride hardness

HV850 – 1000

Screw diameter Range


Max. Barrel Inner Bore Diameter


Nitride case depth

0.45 - 0.7mm

Screw bimetallic depth


Barrel bimetallic   depth

HRC 58-60

Product Features

Single Screw and barrel for Injection Moulding Machine


Single Screw And Barrel For Injection Moulding Machine factory

Barrel Production Process


Single Screw and barrel for Injection Moulding Machine

Precautions for using the screw barrel of the injection molding machine

1. Each plastic has an ideal plasticizing processing temperature range, and the barrel processing temperature should be controlled to bring it close to this temperature range. When the granular plastic enters the barrel from the hopper, it will first reach the feeding section, and dry friction will inevitably appear in the feeding section. When these plastics are insufficiently heated and melted unevenly, it is easy to cause the inner wall of the cylinder and the surface of the screw to wear more. Similarly, in the compression section and the homogenization section, if the molten state of the plastic is disordered, the wear is increased.

2, the speed should be adjusted properly. Some plastics are supplemented with reinforcing agents such as fiberglass, minerals or other fillers. These materials tend to have a much greater frictional force on metallic materials than molten plastics. When molding these plastics, if they are made at a high rotational speed, the shearing force on the plastic will be increased, and the reinforcement will also produce more shredded fibers correspondingly. The shredded fibers contain sharp ends and wear. The power is increasing. When the inorganic minerals slide at high speed on the metal surface, the scraping effect is not small. Therefore, the speed should not be adjusted too high.

3. Remove debris from plastics. In general, the original purchased fresh plastic does not have any sundries, but after transportation, weighing, drying, color mixing, especially adding recycled materials, it is possible to mix debris. Small as metal scraps, as big as heating ring nut paper clips, even a string of warehouse keys, mixed into the barrel has occurred, this damage to the injection molding machine screw is self-evident (the barrel will of course also At the same time, it is damaged), so it is necessary to install a magnet holder to strictly manage and monitor the feeding.

4. The moisture contained in the plastic has a certain influence on the wear of the screw surface. If the plastic does not completely remove the moisture before the injection, the residual moisture enters the compression section of the screw, and the high-pressure pressure "steam particles" melted in the molten plastic are formed, and the screw is advanced along with the injection process. From the section to the head of the screw, these "steam particles" are relieved and expanded during the course of the shot, like a fine impurity of hard particles, which causes friction damage to the wall surface. In addition, for certain types of plastics, at high temperatures and pressures, moisture may become a catalyst for cracking the plastic, producing harmful impurities that can attack the metal surface. Therefore, the drying work before plastic injection molding is not only directly related to the quality of the parts, but also affects the working life of the screw.


Q: How about your screw barrel quality compared to Machine suppliers?
A:  In fact, we have many machine supplliers and agents buying screw barrel from us, the quality and price are both competitive .
Q: What are the main base materials do you use?
A:  38CrMoAlA,  40Cr, 42CrMo, SKD61, TGS2, TGS3, etc.
Q: Delivery time ?
A: Around 25-45days, depends on different screw barrel.  

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